Derivatives and Hedging Activities - Effect of Derivative Instruments on Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in OCI on derivatives	$ 8	$ 0
Amount of gain or (loss) reclassified from accumulated OCI into income	(63)	0
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in OCI on derivatives	8	0
Interest income/(expense) | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from accumulated OCI into income	$ (63)	$ 0